<human>: Can you succinctly summarize the text in 1-3 sentences?

I recently moved about 90 minutes away from home for university, while my girlfriend of 3 years (we met and started dating in high school, and have an awesome relationship, let's call her G) stayed in our home city and is living at home while commuting to university. We see each other every week, two weeks at the most, depending on our schedules, but some of that is her coming to me instead of me going back to our home city. 

My mom is very sensitive, and very attached to my brother and I (which I don't blame her for because she and my dad were divorced when I was a toddler) and asks me to come home all the time (which I agree to when I can). However, when I go home and want to see G, my mom wants me to invite her over instead of going to G's house. I realize that this doesn't seem like a problem at all, but at my mom's house, G and I have ZERO privacy or time to ourselves, because my brother and I share a room in my tiny house, and people are constantly walking around and interrupting us. G's parents are much more relaxed and we get plenty of time to simply be together. 

My mom is a strict Christian (G and I are Christians as well, but we know we have the right to be in a closed room with our SO if we want), and this contributes to the fact that we have no privacy. 

How do I tell my mom that I enjoy going over to G's house much more than I enjoy it when G goes to hers? If I word it wrong she'll start to ask if we're doing anything "inappropriate", and I'd love to avoid that conversation. 

NOTE: I don't spend all my time in my home city with G. I spend half, if not more, with my family, and the other portion with G. So it's not like my mom does not get to see me when I go home.
<bot>: My mom wants my girlfriend to come to her house when I visit my home city from uni but gives us no privacy. How do I tell my mom I have more fun going over to my girlfriend's house?