She described speeches by Reform Caerdydd Penarth MS Joe Martin in June, including one making allegations about Sudanese asylum seekers, as “flashpoints” for her.
In the speech he implied asylum seekers from the country posed a safety risk.
Martin’s words, Cooper-Lesadd said, “just completely did not chime with the type of person that I am and the values that I have”.
“There were other several things. The party’s completely chaotic, it’s falling apart at the seams, it really, really is.”
She said she felt uncomfortable with some of the language used by Reform members.
Cooper-Lesadd, a former Conservative, was elected as a Reform MS for the Pen-y-bont Bro Morgannwg constituency in May’s election.
Her swap to Plaid Cymru means she has been in three political parties since 2024.
During the interview, Cooper-Lesadd was also asked about her view on independence, and further powers for the Welsh government, two things that Plaid Cymru has campaigned on.
“I support the ability of people to choose their own future, and that is self-determination and Plaid have said, that it will happen when the time is right.
“I would vote yes, because, I have seen increasingly the fact that Wales is short-changed in so many different ways, but we aren’t there yet.
“The nation is on a political journey, and I’m on a political journey as well, and it’s about bringing people with us.”
