Personal Expenses Limit for Assessee: 6 Lacs in FY 2023-24?

My wife who is a resident indian and aged 34 earned 4 lacs in FY 23-24. Under 44ADA, I believe her profit would be counted as 2 lacs. She has also booked profit of 2.25 lacs this year from listed equities where STT has been paid. She held the shares for more than a year so it is LTCG. Will she be expected to pay any taxes this year? Also, what happens if she has the same income next year also? Can she book more profit next year without paying taxes? I read somewhere that income from ltcg where special tax rates are applicable can not be exhausted against 4 lac (new regime) and 2.5 lac (old regime) limit from next financial year onwards?