Should these closed-ended funds Gabelli Equity Trust Inc., Gabelli Utility Trust, and Gabelli Healthcare & Wellness Trust be sold and put into something else?

So my mom has had these products for sometime now (about 9-12 years). I don't know who referred them to her, but wanted to know if she should keep them (untouched), or sell them off and put into different investment products. She's over 80s years old, and safe with here investments and looking for long term holds. just wanted everyone's opinions . Thank you