Actually… this is not childish at all. I would call this a brilliant way of working through complicated emotions and traumatic scenarios to be honest. It’s a form of self therapy!!! Good for you!!! 
I understand this completely!!! being multi-lingual. I have lost a great deal of Russian and French due to not practicing. Don’t worry though… the more you practice… the quicker it all comes back to you!!!
Absolutely!!! You can do it!!! 