"A girl drinks."
Yes. The typical word order in Irish is Verb-Subject-Object. The main exception to that rule is the copula. There is some information about word order and the copula here: https://www.duolingo.com/skill/ga/Basics-1/tips-and-notes
Press and hold on the word and the option of accents should appear (eg press and hold i to make í). If that doesn't work I recommend downloading gboard which has it or maybe search through your keyboard setting for a language that has accents and hope they appear. Though, it comes with like 2 downsides..