It is likely that this case will be treated as a second offense DUI. While your juvenile history may have been expunged, the DUI will appear on your driving abstract, which prosecutor's often review prior to sentencing.
If you are dissatisfied with your current attorney, then you should contact a new one. Many attorneys offer a free consultation and can often get involved with your case quickly. All lawyers are ethically required to communicate with their clients about matters involving a client's case. If you are not being properly informed of what is happening with your matter, you need to obtain a new attorney.
It is extremely unlikely that you will receive any period of incarceration for this case. You will likely receive a period of probation and have to comply with a drug evaluation. If you are convicted of the possession of a controlled substance charge, you will likely receive a 6 month driver's license suspension in addition to the other consequences mentioned. Therefore, it is critical that you obtain an attorney who can appropriately negotiate the charges or raise a defense on your behalf...
If you were placed on ARD and you do not complete community service hours, your ARD will likely be violated and you will have to enter a plea or stand trial for the original charges. If you are on probation or parole, your probation officer will likely violation the probation or parole. They may give a brief extension for you to complete the community service, but you should try to complete it as soon as possible.
The prior PWID that did not result in a conviction can not be used to calculate your sentencing guidelines. So, usually it is not something that a judge is even aware of at the time of your sentencing hearing. If the District Attorney raises it, your attorney should object on the basis that you were not convicted. My answer assumes that the previous case was dismissed or you were found not guilty. If it is still pending, my response would be different.
It is not likely that you will have to serve more than 72 hours in jail and you may be eligible for ARD, which would avoid jail altogether. Whether you receive ARD will depend on what county you committed the DUI in and what the eligibility criteria for ARD is in that county. Most District Attorney's Offices will approve ARD, if this was a first offense, there was no accident, you had a valid license and valid car insurance and you did not have a child in the car. Good luck!
She is not likely to incur jail time whether she attends rehab or not. Most counties will not offer a second ARD, but she is still likely to only receive probation. However, if she is convicted of the possession of a controlled substance charge, she will incur a 6 month driver's license suspension.
You probably received a 5 year revocation, as opposed to a 5 year suspension. If you incur 3 convictions for certain enumerated offenses within a 5 year period, PennDOT can revoke your license, based on you being deemed a habitual offender.
Ordinarily, if your community service hours and fines are not completed in time, your probation will be extended. However, that is only likely to happen one or two times before the probation officer files for a violation. If this is an ARD situation, your ARD can be extended, but it will only usually be extended for a brief period.
It is unlikely that the University will find out about your ARD at this point. However, if you have mandatory reporting requirements, be sure to comply. Hopefully, you will merely earn the dismissal of the charges by completing ARD and then have the charges expunged without the university becoming aware.