Very simply, a motion for summary judgment is an application by a party to resolve all or a part of the case on the basis that their exist no issues of fact for a jury to decide so that whatever is in controversy can be decided as a matter of law (ie, by the judge). It is generally used to resolve a question of liability but it can be used to establish certain defenses as well.
There is no question here and assuming this is indeed your house, there is no remedy either in terms of a claim or lawsuit. Homeowner's coverage is intended to cover 3rd parties injured on the premises. Homeowners and family members are generally excluded from coverage. I'm not sure who else you intended on bringing a claim against but it is unlikely you would prevail.
Given the extent of your injuries, you should contact an attorney familiar with premises liability matters to discuss the landowners liability. You should probably refrain from posting any more facts concerning the case.
The best "advice" is to continue with the medical care you require and consult with an attorney in your area as soon as possible. There is too much at stake not to take advantage of the free consultation offered by most personal injury attorneys. Good luck.
You've painted a complicated picture that is probably more complicated than stated. Assuming a valid cause of action exists that isn't time barred, you will have a difficult time finding an attorney to take such a case, certainly not on a contingency basis. Find a good family law attorney regarding the custody issue and go from there.
Assuming your attorney is an experienced personal injury attorney, he/she is probably not in the position to give an opinion at this point. There are many factors that go in to the value of a case not all of which are actually related to the injury itself.