Stay informed with free updatesSimply sign up to the Foreign exchange myFT Digest -- delivered directly to your inbox.Newly elected Mexican president Claudia Sheinbaum faces a struggle to tempt investors back into the country’s financial markets, amid worries about controversial judicial reforms and the prospect of higher borrowing costs.The peso has steadied following a sharp post-election sell-off, and was briefly boosted this week by Sheinbaum’s appointment of a business-friendly economy minister.But, given the scale of the victory for Sheinbaum’s Morena party, fund managers are reluctant to pile back into lucrative...