Gaining weight working out

Selena

NOT FOR ME: FOR MY MOM.

She has been working out for about a month now almost 6 days a week for an hour or more and has saw she has gained 5 pounds instead of losing any weight.

She’s started to give up and I don’t want her to, this is the first time in my 19 years of live she’s wanted to 100% workout.

Anyone know why she could be gaining instead of losing??? I really don’t want her giving up.