Does randomly touching a little girl during play invalidate the marriage contract (aqd an-nikāḥ) on the assumption that it constitutes tribadism (siḥāq), fulfilling the condition you mentioned in a previous fatwa?

What you have mentioned in terms of obsessions does not lead to divorce. It is not true that lesbianism prevents the acceptance of the declaration of faith (Shahada) or that repentance for it is not accepted. Sound repentance is accepted for every sin. You must turn away from these obsessions and seek help from Allah.